Wrench



QSTOLZE.

WRENCH.

(No Model.)

Patented Mayao, 189s.

UNITED lSTATES PATENT' OFFICE.

CHARLES STOIJZ, OF RHINELANDER, WISCONSIN.

WRENCH.

SPECIFICATION forming' part 0f Letters Patent NO. 498,321, dated. May30, 1893.

l Application filed April 5, 1893. Serial No. 469,129. (No model.)r l IT0 all whoml it may concern,.-

Be it know-n that I, CHARLES STOLZE, acitizen of the United States,residing `at Rhinelander, in the county of Oneida and State ofWisconsin, have invented a new and usefulA \Vrench, of which thefollowing is a specification.

The invention relates to` improvements in wrenches.

The object of the present invention is to improve the'construction ofwrenches,and t0 provide one adapted for use either as aj nut or pipewrench, and capable when being used purpose of forming a. perfectsponding parts in all the figures of the drawlugs. j

1 designates a shank rectangular in crosssection having a handle 2f atone end and provided atthe other end with a stationary preferablyintegral jaw 3, which is adapted for nuts and which, when the wrench isemployed for operating on pipes, has secured to it a steel jaw-face 4.The jawface is constructed with ya hook 5 to engage the tapered end ofthe stationary jaw; and it is provided With opposite parallel ianges 6eX- tending on opposite sides of the shank and projecting beyond thesame and provided with openingsreceiving a pin 7 for securing thejaw-face in place. The engaging surface of the jaw-face is curved andprovided with shouldered teeth. The shank has mounted on it a slidingcasing 8 adapted to be adj usted onthe shank between the handle and thestationary jaw, and carrying at its upper end a pivoted jaw 9 which hasits upper face vention.

provided with a seriesof` teeth or projections ada'pted to co-operatewith those of the jaw-face. The sliding casing is secured in itsadjustment by opposite similar pivoted pawls 10, which engage oppositeteeth 11 'of the shank and which are held in such engagement by datsprings 12. jaw is provided at its lower side with a depending lug 13,which is perforated and pivoted in a recess 14. by a pin 15. The recess14. is formed in the upper end of the casing, which is provided'thereatwith an extension 16 arranged beneath the outerportion of the pivotedjaw for supporting the same. The pivoted jawiis provided at its innerside with parallel guiding flanges` 17, which are disposed on oppositesides of the shank to prevent the jaw 9 having anylate'al movement. Thearrangement of the pivoted jaw 9 is such that in screwing or turning apipe the tendency is to force the saidpivoted jaw in-v The pivoted.

ward toward the shank, thereby lessening the distance between the jawsand clamping the jaws more securely; and in releasing the' wrench theoperation vis reversed and tends to separate the jaws, thereby readilyfreeing the wrench..

When employed as a nut wrench the jawface 4. is detached.

It will be seen that the wrench is adapted to be employed either as anut or a pipe wrench, and that when employed forv the lat-v ter purposeit is especially adapted for such use.-

Changes in the form, proportion and the minor details of constructionmay be resorted to without departing from the principle or sacrificingany ofthe advantages of this in- What I claim is* Y y In a wrench, thecombination of a shank havingfoppositely disposed teeth and pro-v videdat its upper end with a stationary jaw, a steel jaw-face detachably`secured. to the stationary jaw, a sliding casing mounted on the shankand provided at one side with an upward and outward extension andhavinga recess at the inner side ofthe extension, spring actuated pawlspivotally mounted on the casing and engaging the teeth of the shank, anda pivoted jaw provided with a depending lug secured in the recess of theeasing by a pilnand provided at its inner side with parallel guideilanges arranged on the sides of the shank, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two Witnesses.

CHARLES STOLZE.

Witnesses:

E. C. STURDEVANT, J. il. LEWIS.

